15 Dec
2009
15 Dec
'09
7:39 p.m.
Tony Duell wrote:
Do you know the make and model?
Is this a custom drive for this machine, or a
more standard one. Very few
manufacturers (espeicailly at that time) made their own hard disk
It is not a custom drive, but a very uncommon one. They were used on
Bull systems, and on some PDP-11 systems made by Baydel. I have scanned the full documentation, Al put it on
bitsavers. It is a
somewhat ST506 like interface.
OK, I'll take a look sometime. Does this include detailed internal
documentation on the drive?
I assume
you've checked the obvious -- power rails and such.
These are OK.
I would also
guess the power amplifier to drive the positioner is not in the ASIC.
That is much more likely to fail than a low-poerr-ish ASIC. I asusme
you've checked that too.
Not yet. Will do of course, but if can get a replacement drive for a